Modify getType to ensure that it does not result in initialization of

sdk/lib/_blink/dartium/_blink_dartium.dart

 /**
  * This library provides entry points to the native Blink code which backs
  * up the dart:html library.
  */
 library dart.dom._blink;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:html';
 import 'dart:_internal' hide Symbol, deprecated;
@@ skipping 8115 matching lines @@
 
   static $previousSibling_Callback(mthis) native "TreeWalker_previousSibling_Callback_RESOLVER_STRING_0_";
 }
 
 class BlinkURL {
   // Generated overload resolver
   static $createObjectUrl(blob_OR_source_OR_stream) {
     if ((blob_OR_source_OR_stream is Blob || blob_OR_source_OR_stream == null)) {
       return $_createObjectURL_1_Callback(blob_OR_source_OR_stream);
     }
-    if ((blob_OR_source_OR_stream is MediaSource || blob_OR_source_OR_stream == null)) {
+    if ((blob_OR_source_OR_stream is MediaStream || blob_OR_source_OR_stream == null)) {
       return $_createObjectURL_2_Callback(blob_OR_source_OR_stream);
     }
-    if ((blob_OR_source_OR_stream is MediaStream || blob_OR_source_OR_stream == null)) {
+    if ((blob_OR_source_OR_stream is MediaSource || blob_OR_source_OR_stream == null)) {
       return $_createObjectURL_3_Callback(blob_OR_source_OR_stream);
     }
     throw new ArgumentError("Incorrect number or type of arguments");
   }
 
   static $_createObjectURL_1_Callback(blob_OR_source_OR_stream) native "URL_createObjectURL_Callback_RESOLVER_STRING_1_Blob";
 
-  static $_createObjectURL_2_Callback(blob_OR_source_OR_stream) native "URL_createObjectURL_Callback_RESOLVER_STRING_1_MediaSource";
+  static $_createObjectURL_2_Callback(blob_OR_source_OR_stream) native "URL_createObjectURL_Callback_RESOLVER_STRING_1_MediaStream";
 
-  static $_createObjectURL_3_Callback(blob_OR_source_OR_stream) native "URL_createObjectURL_Callback_RESOLVER_STRING_1_MediaStream";
+  static $_createObjectURL_3_Callback(blob_OR_source_OR_stream) native "URL_createObjectURL_Callback_RESOLVER_STRING_1_MediaSource";
 
   static $createObjectUrlFromBlob_Callback(blob) native "URL_createObjectURL_Callback_RESOLVER_STRING_1_Blob";
 
   static $createObjectUrlFromSource_Callback(source) native "URL_createObjectURL_Callback_RESOLVER_STRING_1_MediaSource";
 
   static $createObjectUrlFromStream_Callback(stream) native "URL_createObjectURL_Callback_RESOLVER_STRING_1_MediaStream";
 
   static $revokeObjectURL_Callback(url) native "URL_revokeObjectURL_Callback_RESOLVER_STRING_1_DOMString";
 
   static $hash_Getter(mthis) native "URL_hash_Getter";
@@ skipping 1191 matching lines @@
   static $setParameter_Callback(mthis, namespaceURI, localName, value) native "XSLTProcessor_setParameter_Callback";
 
   static $transformToDocument_Callback(mthis, source) native "XSLTProcessor_transformToDocument_Callback_RESOLVER_STRING_1_Node";
 
   static $transformToFragment_Callback(mthis, source, docVal) native "XSLTProcessor_transformToFragment_Callback_RESOLVER_STRING_2_Node_Document";
 }
 
 
 // TODO(vsm): This should be moved out of this library.  Into dart:html?
 Type _getType(String key) {
+  var result;
+
   // TODO(vsm): Add Cross Frame and JS types here as well.
-  if (htmlBlinkMap.containsKey(key))
+
+  // Check the html library.
+  result = _getHtmlType(key);
+  if (result != null) {
+    return result;
+  }
+
+  // Check the web gl library.
+  result = _getWebGlType(key);
+  if (result != null) {
+    return result;
+  }
+
+  // Check the indexed db library.
+  result = _getIndexDbType(key);
+  if (result != null) {
+    return result;
+  }
+
+  // Check the web audio library.
+  result = _getWebAudioType(key);
+  if (result != null) {
+    return result;
+  }
+
+  // Check the web sql library.
+  result = _getWebSqlType(key);
+  if (result != null) {
+    return result;
+  }
+
+  // Check the svg library.
+  result = _getSvgType(key);
+  if (result != null) {
+    return result;
+  }
+
+  return null;
+}
+
+Type _getHtmlType(String key) {
+  if (htmlBlinkMap.containsKey(key)) {
     return htmlBlinkMap[key]();
-  if (indexed_dbBlinkMap.containsKey(key))
+  }
+  return null;
+}
+
+Type _getWebGlType(String key) {
+  if (web_glBlinkMap.containsKey(key)) {
+    return web_glBlinkMap[key]();
+  }
+  return null;
+}
+
+Type _getIndexDbType(String key) {
+  if (indexed_dbBlinkMap.containsKey(key)) {
     return indexed_dbBlinkMap[key]();
-  if (web_audioBlinkMap.containsKey(key))
+  }
+  return null;
+}
+
+Type _getWebAudioType(String key) {
+  if (web_audioBlinkMap.containsKey(key)) {
     return web_audioBlinkMap[key]();
-  if (web_glBlinkMap.containsKey(key))
-    return web_glBlinkMap[key]();
-  if (web_sqlBlinkMap.containsKey(key))
+  }
+  return null;
+}
+
+Type _getWebSqlType(String key) {
+  if (web_sqlBlinkMap.containsKey(key)) {
     return web_sqlBlinkMap[key]();
-  if (svgBlinkMap.containsKey(key))
+  }
+  return null;
+}
+
+Type _getSvgType(String key) {
+  if (svgBlinkMap.containsKey(key)) {
     return svgBlinkMap[key]();
+  }
   return null;
-}// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+}
+
+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 
 // _Utils native entry points
 class Blink_Utils {
   static window() native "Utils_window";
 
   static forwardingPrint(message) native "Utils_forwardingPrint";
 
@@ skipping 46 matching lines @@
   static containsKey(_DOMStringMap, key) native "DOMStringMap_containsKey_Callback";
 
   static item(_DOMStringMap, key) native "DOMStringMap_item_Callback";
 
   static setItem(_DOMStringMap, key, value) native "DOMStringMap_setItem_Callback";
 
   static remove(_DOMStringMap, key) native "DOMStringMap_remove_Callback";
 
   static get_keys(_DOMStringMap) native "DOMStringMap_getKeys_Callback";
 }